Delta AS Series Programming Manual page 486

Operand Data type
MV REAL
Function
I_MV+1 The previous error value is temporarily stored here.
I_MV+2–
For system use only
I_MV+5
I_MV+6 The previous PV is temporarily stored here.
I_MV+7–
For system use only
I_MV+14
MV The MV is between the MV_MIN and the MV_MAX.
Ch ap te r 6 Ap pl ie d Instruc ti ons
Setting range Description
(Automatic control,
including I_MV):
When PID_MAN
switches from TRUE
to FALSE, the MV
value is invoke the
output value (MV) in
the automatic
algorithm. If the MV
exceeds the limits of
MV_MAX or MV_MIN,
I_MV use the formula
to calculate the
correct accumulated
integral value and
adjust its value
accordingly. This can
reduce the response
time of the reverse
action.
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